Touchless Beverage Dispenser Zoning to Prevent Accidental Dispensing
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Solution Overview
Problem
Current dispenser systems face challenges in distinguishing between dispensing and cleaning modes, often leading to accidental dispensing during maintenance, particularly due to the lack of intuitive interfaces and the risk of spills in crowded environments.
Innovation Solution
A beverage dispenser equipped with a sensor system that divides its detection zone into sub-zones for dispense, cleaning, and approach areas, using signal evaluation times to differentiate between intentional and accidental interactions, allowing for touchless operation and mode selection without additional mechanisms like keys or complex patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sensor detects objects in the detection zone to enable touchless operation, then ease of operation is improved, but accidental dispensing during cleaning occurs
Solution Approach 1:
The detection zone is divided into multiple sub-zones (first sub-zone, second sub-zone, third sub-zone) based on distance from the sensor. Each sub-zone triggers different dispenser responses, allowing the system to distinguish between intentional dispensing gestures and cleaning movements, thereby preventing accidental dispensing while maintaining touchless operation.
2Productivity
If the dispenser responds to any object detection, then productivity is improved, but spills occur in crowded environments
Solution Approach 1:
Different regions of the detection zone are assigned different functional qualities. The first sub-zone (farther from sensor) is designated for dispensing operations, while the second and third sub-zones (closer to sensor) are designated for cleaning operations. This spatial differentiation allows the dispenser to respond appropriately to gestures in different locations, enabling fast dispensing when intended while preventing spills from accidental detections during cleaning.
3Reliability
If additional mechanisms like keys or complex patterns are added to prevent accidental dispensing, then reliability is improved, but device complexity increases
Solution Approach 1:
Instead of adding temporal complexity (keys, patterns, sequences), the solution adds spatial dimensionality by dividing the detection zone into multiple sub-zones along the distance axis. This allows mode selection to be determined by the spatial position of the detected object rather than requiring complex temporal interactions, thereby improving reliability while maintaining interface simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate interpretation of user interactions for both dispensing and cleaning modes, reducing accidental dispensing and enhancing user experience by providing an intuitive interface that rejects incidental interactions.
Implementation Method 1
A sensor is operable to detect an object within a detection zone and provide a signal representative of a distance between the object and the sensor
Data Source
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AI summary
An example of a beverage dispenser includes a nozzle (22) and a valve (18) coupled upstream of the nozzle (22). A sensor (26) is operable to detect an object within a detection zone (32) and provide a signal representative of a distance between the object and the sensor. A controller (24) is configured to receive the signal from the sensor (26). The controller (24) is configured to determine a sub-zone from a plurality of sub-zones within the detection zone (32) in which the object is located. The valve (18) is controlled between an open condition to dispense the substance through the nozzle (22) and a closed condition based upon the determined sub-zone.